Home / 21,020,609.62-29,009,285.02-11,728,991.28

Finding the Fourth Proportional to 21,020,609.62, 29,009,285.02 and 11,728,991.28

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Solution

The fourth proportional to 21,020,609.62, 29,009,285.02 and 11,728,991.28 is: 16,186,478.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020,609.62 : 29,009,285.02 = 11,728,991.28 : x
  2. Step 2: Convert to fraction form
    21,020,609.62/29,009,285.02 = 11,728,991.28/x
  3. Step 3: Cross multiply
    21,020,609.62x = 29,009,285.02 × 11,728,991.28
  4. Step 4: Simplify right side
    21,020,609.62x = 340,249,651,038,614.62
  5. Step 5: Solve for x
    x = 340,249,651,038,614.62/21,020,609.62
  6. Step 6: Final answer
    x = 16,186,478.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.